How much does a backup solar system cost in South Africa?

A standard 5kW hybrid solar system with a 5.12kWh lithium battery typically costs between R65,000 and R90,000 fully installed with CoC. Larger 8kW systems for 3-4 bedroom homes range from R115,000 to R150,000, while 12kW-15kW 3-phase setups range from R190,000 to R260,000.

Will an 8kW solar system run my whole house during Stage 6 load shedding?

Yes. An 8kW hybrid inverter paired with 10kWh to 15kWh of lithium battery storage easily powers lights, Wi-Fi, televisions, refrigerators, computers, security systems, and microwave/kettle usage in turns, keeping your home fully powered throughout 4+ hour load shedding blocks.

What is the difference between backup power and a hybrid solar system?

A backup power system (inverter + battery) charges from Eskom and supplies electricity only during outages, protecting you from blackouts but not reducing your monthly electricity bill. A hybrid solar system includes solar panels to generate free electricity daily, slashing your Eskom bill by 60% to 90% while providing continuous uninterrupted backup power.

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Slide to your average monthly electricity bill. Our algorithm instantly calculates your ideal inverter rating, lithium battery capacity, and projected 10-year savings against Eskom rate increases.

Your Monthly Electricity Bill: R 4,500

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Recommended System Specification

8kW Executive Load Shedding Killer

8kW Sunsynk / Deye Paralleling Inverter
10.24kWh (2x 5.12kWh) Lithium Battery Bank
10 x 550W Tier-1 Mono Panels (5.5kWp)

Est. Monthly Bill Cut

R 3,510 / mo

Est. 10-Year Cumulative Savings

R 610,740

⚡ Average Payback: 3.4 Years 🔋 Backup Runtime: 8 to 14 Hours

Turnkey Solar Solutions

South Africa's Most Popular Backup & Solar Packages

Complete turnkey installations including mounting, DC/AC switchgear, surge protection, smart monitoring, and certified CoC sign-off.

5kW Starter Hybrid System

Ideal for: Townhouses, 2-3 Bedroom Homes, Essential Circuits

R 74,900 - R 89,000

Or from R 1,850/month on rent-to-own / financing

5kW Sunsynk / Deye Pure Sine Wave Inverter
5.12kWh LiFePO4 Battery (6,000 Cycles @ 80% DoD)
6 x 550W Tier-1 Panels (3.3kWp Generation)
Powers Lights, Wi-Fi, TV, Fridge & Home Office
Full Electrical CoC Certificate Included

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South Africa's Leading Solar Brands & Manufacturers

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Hubble Lithium

Dyness

Canadian Solar

JA Solar

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Protect your business operations, cold chain, retail center, or manufacturing plant from load curtailment without tying up working capital. Benefit from fully financed solar solutions, Section 12B tax incentives, and guaranteed tariff savings against Eskom price spikes.

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Commercial Solar Case Study

Automotive Components Facility, Rosslyn, Pretoria:

System Sizing

250 kWp

Rooftop PV Array

First Year Savings

R 840,000

Direct Eskom Offset

"Eliminated 94% of generator diesel consumption during 2024 load curtailment and lowered effective electricity tariff to R1.38/kWh."

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Frequently Asked Questions

Everything You Need to Know About Backup Solar in South Africa

Straight answers from certified solar engineers on system sizing, lithium batteries, prepaid meters, and municipal compliance.

A hybrid solar backup system connects between your municipal Eskom meter and your home distribution board (DB). When Eskom power cuts during load shedding, the inverter automatically transfers critical circuits to the lithium battery bank in less than 10 milliseconds (seamless uninterruptible power supply / UPS). Your lights, Wi-Fi, computers, and TVs will not even flicker. When the sun shines, your solar panels generate power and simultaneously recharge the battery.

Yes, provided the system is sized correctly. A 5kW system easily powers refrigerators, entertainment, Wi-Fi, lighting, and a microwave in turns. To run electrical geysers, pool pumps, and multiple air conditioners simultaneously, an 8kW to 12kW hybrid inverter is recommended, paired with smart relays (such as CBI Astute timers or Sunsynk AUX load ports) to manage heavy loads efficiently during outages.

Under South African law and Occupational Health and Safety (OHS) regulations, any embedded generation or backup power installation connected to a building's electrical wiring must have a Certificate of Compliance (CoC) issued by a registered Department of Labour (DoL) wireman. A valid CoC guarantees your system has correct DC/AC surge protection, earthing, isolators, and anti-islanding safety features. Insurance companies will reject claims for fire or electrical damage if an uncertified solar system was installed without a CoC.

In the City of Cape Town, all grid-tied and hybrid solar installations must be registered and authorized under the Small Scale Embedded Generation (SSEG) scheme using approved inverters (such as Sunsynk, Deye, or Victron with certified anti-islanding test certificates). Cape Town also offers feed-in tariffs (Cash for Power) where you can sell excess solar power back to the grid. In Johannesburg, City Power requires embedded generation registration to ensure grid stability and meter compatibility. All installers in our network handle municipal approvals and documentation on your behalf.

Modern LiFePO4 batteries (such as Freedom Won, Hubble Lithium, Dyness, and Pylontech) are rated for 6,000 to 8,000 cycles at 80% to 90% Depth of Discharge (DoD). In typical South African conditions (one full cycle per day during load shedding), this translates to a lifespan of 15 to 20 years, with manufacturer warranties typically extending for 10 full years. This makes lithium far superior and cheaper over time than obsolete lead-acid or gel batteries.

Stop Load Shedding. Cut Your Eskom Bill by 85% With Backup Solar.